19-2248385-C-A

Position:

• chr19-2248385-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_007165.5(SF3A2):​c.1234C>A​(p.Pro412Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 29)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SF3A2 NM_007165.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.94

Genes affected

SF3A2 (HGNC:10766): (splicing factor 3a subunit 2) This gene encodes subunit 2 of the splicing factor 3a protein complex. The splicing factor 3a heterotrimer includes subunits 1, 2 and 3 and is necessary for the in vitro conversion of 15S U2 snRNP into an active 17S particle that performs pre-mRNA splicing. Subunit 2 interacts with subunit 1 through its amino-terminus while the single zinc finger domain of subunit 2 plays a role in its binding to the 15S U2 snRNP. Subunit 2 may also function independently of its RNA splicing function as a microtubule-binding protein. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.13315266).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SF3A2	NM_007165.5	c.1234C>A	p.Pro412Thr	missense_variant	9/9	ENST00000221494.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SF3A2	ENST00000221494.10	c.1234C>A	p.Pro412Thr	missense_variant	9/9	1	NM_007165.5	P1

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1229716 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 592462

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 29

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 05, 2022

The c.1234C>A (p.P412T) alteration is located in exon 9 (coding exon 8) of the SF3A2 gene. This alteration results from a C to A substitution at nucleotide position 1234, causing the proline (P) at amino acid position 412 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.097
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	16
DANN	Benign	0.79
DEOGEN2	Benign	0.048	T
Eigen	Benign	-0.67
Eigen_PC	Benign	-0.62
FATHMM_MKL	Benign	0.49	N
LIST_S2	Benign	0.64	T
M_CAP	Benign	0.073	D
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	0.34	N
MutationTaster	Benign	0.53	N
PrimateAI	Uncertain	0.76	T
PROVEAN	Benign	-0.060	N
REVEL	Benign	0.048
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.029	D
Polyphen		0.14	B
Vest4		0.34
MutPred		0.32		Loss of catalytic residue at P411 (P = 0.0116);
MVP		0.29
MPC		0.70
ClinPred		0.45	T
GERP RS		3.3
RBP_binding_hub_radar		0.92
RBP_regulation_power_radar		2.6
Varity_R		0.15
gMVP		0.22

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-2248384;